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经营范围
发明名称
An improved appliance for making calculations relating to the power factor in an electrical installation
摘要
申请公布号
GB690444(A)
申请公布日期
1953.04.22
申请号
GB19500025348
申请日期
1950.10.18
申请人
ROBERT BOND
发明人
分类号
G06G1/14
主分类号
G06G1/14
代理机构
代理人
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